Neutral Spin Collective Mode in Carbon Nanotubes

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مد جمعی بدون باراسپینی در نانولوله های کربنی

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 42269 (04)
University: Sharif University of Technology
Department: Physics
Advisor(s): Jafari, Akbar
Abstract:
In 2002 Baskaran and Jafari published an article that was about a spin-1 collective mode. Similarity between carbon nanotubes and graphene was a motivation for working on this project, in order to find another spin mode by considering random phase approximation as a simple way of finding collective motion of a physical systems. Moreover rolling graphene sheet induce diffrent physical properties as a result of chiral axis . In this project we focus only on achiral nanotubes and at last find two collective modes in this structures
Keywords:
Carbon Nanotubes ; Random Phase Approximation (RPA) ; Neutral Spin-1 Collective Mode